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10. Is the administration of questionnaires via the tablet, reliable?
A number of research data indicate that indeed the administration of questionnaires in electronic form is reliable...

More specifically, Butcher et al (2000) in their work on the validity of the use of questionnaires by computer conclude that their use is safe for at least those questionnaires whose validity has already been vested in advance by administration in the traditional way. Similar conclusions suggest Drasgow Mead (1993) study.

More specifically, a plethora of relatively recent research publications have shown that the validity and reliability of standardized questionnaires that assess psychopathological situations are not different when they are administered via computer compared to their administration in the traditional way. For example, the CSQ (Cognitive Style Questionnaire) is a scale commonly used to measure negative modes cognitive approach conditions associated with the susceptibility of the individual to depression and anxiety.

Meins, McCarthy-Jones et al (2012) concluded that it can safely be administered via the Internet and hence the use of a computer. Similar conclusions regarding the psychometric properties of the PDQ-39 (Parkinson's Disease Questionnaire) when administered via the computer were reached by Morley et al. (2015). Kemper (2008) concluded that administration of the ASI-3 (Anxiety Sensitivity Index), a scale that measures the tendency of individuals to experience a super-enlarged fear and anxiety state, which is a cognitive risk factor development of relevant symptoms, may safely be administered by computer. Scales that measure the voltage of the person's delusions and granted tracking ideas either the traditional way or by using electronic means investigated by Jones et al (2008) and concluded that there are no differences related to the means of administration in the reliability of psychopathological data collected for evaluation. The work of Cols, Cook & Blake (2007) also reached similar conclusions concerning the granting of scales that measure symptoms and beliefs in obsessive compulsive disorder.

Moreover, within the relevant survey, we asked 20 participants-patients to comment on the matter. The prominent, almost universal, response was that it was easier and faster, while other comments were that it has more clear questions, does not cause confusion by the different "layout" of the pages of questionnaires administered in the traditional manner, the "design stratagem "answers (the user does not have access to previous and subsequent questions to give answer to each question in harmony with the other answers). In addition, questionnaire's administration using a tablet and an electronic pen, is more similar to the traditional way of questionnaires' administration than using a computer and a mouse pointer.

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"I’ve used PSYDESK for psychometric assessment purposes and been impressed for its innovative possibilities. It makes the administration of questionnaires and results’ extraction a fun procedure, gives the opportunity to effectively organize your data and makes statistical analysis appealing. I highly recommend it to colleagues who are interested in understanding human behavior", N. Toumanian,  Psychologist - M.Sc/HR Consultant, ISON Psychometrica

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